Connecting rod



Sept. z, 1924.

' 1,507,514 J. PETROSKY CONNECTING ROD Filed Nov. 5, 1915 2 Shuts-Shut l ZZ 3141x141 Qx -mw J b 138N061.

- m 1 a ,4- *ar I I I I. I gnaw? Patented Sept. 2,

UNITED STATES 1,507,514 PATENT oFFnce.

JOHN H. PETBOSKY, 0F DETROIT, MICHIGAN, ASSIGNOB TO PACKARD MOTOR CAR COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

consume non.

Application med November 5, 1915. Serial No. 59,721

T 0 all whom it may concern:

Be it known that I, JOHN H. Pn'raosxr, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Connecting Rods, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to connecting rods, pitmans, and drive bars, and the primary object of my invention is to provide a simple, durable and inexpensive power transmitting member made of sheet metal stamped, pressed and fabricated in a manner which insuresrigidity for practical purposes equal to a solid metallic member.

A further object of my invention is to provide a power transmitting member possessing sufiicient tensile strength to resist stresses and strains set up by drive and driven elements, the member including effective means whereby bearing ends thereof may be thoroughly lubricated.

The above and other objects are attained by a mechanical construction that will be hereinafter described as a connecting rod, which can be advantageously used in connection with internal combustion en es, particularly of automobiles and aerop anes where it is a desideratum that the working parts of an engine or motor be as light as possible and yet be of such constructlon as to insure safety.

Reference will now be had to the drawin%,wherein r igure 1 is an elevation of a connecting rod in accordance with my invention;

Fig. is a longitudinal sectional view of the same;

Fig. 3 is an elevation of. a portion of a connecting rod, illustrating a modification of my invention;

Fig. 4 isan elevation of a portion of one of the members thereof;

Fi 5"is an elevation of one of the rod mem rsshown in-Figs. 1 and 2;

Fig.16j is an edge view ofthe same;

Fi 7 is an, elevation .of a bearing. mem r r t is a plan of the same;

F 1 9V is a cross sectional view taken on the line IX-IX of Fig. 1;

Fig. 10 is a plan of a bearing sectlon;

Fig. 11 is a tached bridge;

F i 12 is an elevation, of the same show-' g t e manner of placing a. bushing section in the bearing section, and

Fig. 13 is a similar view of a section provided with a sectional In describing m perspective view of a debearing bushing, invention by aid of the views above re erred to, I desire it to.

be understood that such. views are intended merely as illustrative of an example whereby my invention is applied in practice and I do not confine my invention to the precise construction and arrangement of parts shown. The following description is therefore to be broadly construed as ,including substitute constructibns and arrangement of parts which are equivalents of those on to the side ed es 0 the member 1, as

best shown in Figs. 1 and 9,- and spot welded or otherwise connected, thus providing interlocked edges affording 'rigid seams longitudinall of the members. Each member, for t e eater art of its length, is substantially -sha in cross section, thereby provlding' opposed 1011 1- I tudinal stiffening ridges 3 on the sides '0 a com leted connecting rod. Each member is furt ermore shaped so that the ridges 3 serve functionally as trusses between the ends of a connecting rod, and to accomplish this result, each ri has for. its

. apex a point intermediate t e ends of the member said ridge gradually mer g into the plaiie of the member. Such ri g s tend to prevent a connectin .rod from buckling or becoming distort forthe members a bridge 4 is mounted between th mem at the apices of the ridges 3. The bridge is in the form of a plate having flanges 5 spot welded or otherwise secured to the confronting sides of the members 1 and 1'.

intermediate the ends thereof, and as a further reinforcement The tapering members 1 and 1 necessarily provide lar e and small ends and for the convenience of rther describing my invention and at the same time alluding to the ordinary use of a connecting rod, the large end thereof represents the drive or crank end and the small end of the rod the driven or piston end. Considering the driven end of the rod each member terminates in a circular head 6, and one of said heads has a flange 7 as a continuation of the flanges 2 on the side edges of the member 1. The head 6 is provided with a concentricopening 8 surrounded by an outstanding ferrule 9 and when said members are properly connected together by bending the flan e 7 of one member on to the head ofthe a joining member and spot welding, the openvmgs 8 and the ferrules 9 align and. form. a

hearing. The connecting rod of the present invention therefore comprises two sheet metal members interlocked at their longitudin'al edges forming a tube with bearings at the opposite ends thereof, the tube being polygonal in cross-section, onedimension of said section increasing from the ends of the tube' toward the central portion and another dimension increasing from one end toward the other. As shown in the drawings the tube is diamond-shaped in crosssection.

Cooperating with the fiange7 in holding thesmall ends of the members together is or otherwise fixed in the liner, thereby com-' pleting the bearing.

At the drive end of the connecting rod, the members 1 and 1' are formed with semi-- cylindrical recesses 13 and semi-cylindrical ferrules 14. The members are furthermore formed with substantially semi-cylindrical members are connected by a semi-cylindrical liner 17, and this liner, similar to the liner 10, has the ends thereof beaded'or butturned and clenched u on the ends of the ferrules 14, as indicate at 18. This large end of the connecting rod, thus far formed,- represents a fixed or stationary bearing sec-- tion, and reference will now be had to a detachable bearing section best shown in Figs. 1, 2, 7, 8, 9 and 10. The detachable bear-ix section comprises a two members 19] with semi-circular nected by a semi-cylindrical liner 25 having the ends thereof clenched on the outer ends of the ferrules 21, In addition to the beaded ends of the semi-cylindrical liner- 25 holding said liner in position, there are rivets 26 and the inner ends of said rivets are adapted to fit in sockets 27 provided therefor in a semi-c lindrical bushing 28 set in the bearing section. The semi-cylindrical. bushing 28 is adapted to cooperate with a similarbushing 29 in the fixed or stationany bearing member of the connecting rod. The bushin sections 28 and,29' have end flanges 30 w ereby after the bearing sections are assembled, the bushin sections cannot become accidentally disp aced relative to the bearing at the driven end of the connectin rod.

ounted in the barrel sections 15 and 23 are sleeves 31, said sleeves corres ending in length to the combined length 0 the barrel sections 15 and 23 at each side of the connecting rod. The sleeves 31 accommodate bolts 32 having heads 33 and detachable nuts 34. The heads 33 of the bolt are notched, as at 35', whereby the interlocked side edges or seams of the connecting rod may extend into the notches 35 and prevent the bolts 32 from rotating in the sleeves 31 .or the barrels of the bearing. This is best shown in Fig. 9, and any suitable means may be resorted to for locking the nuts 34 upon the bolts 32.

In order that a lubricant can be conveniently and advantageously used'in connection. with the bushings at the drive and driven ends of the'connectin rod, a tubular conduit 36 is disposed ongitudinally between the members 1 and 1" of the connecting rod, said conduit extending through anopening 37 provided therefor in the liner 17 and said conduit is in communication with. a port 39 in the bushing section 29. The: opposite end of the conduit 36 extends into one of a series of radial ports 40 in the bushing 12 and these rts are in communication. wit an ann ar groove or depressiont 41. in the liner 10, consequently a lubricant flow from one bushing to another. The annular. de ion of the liner 10 extends between as interlocked edges of the members 1 and 1 and properly positions The sections of the bushing have channel shaped ends43, adapted to engage the ends of the bearing member whereby the bushing sections 42 cannot become accidentally displaced when the detachable bearing section is removed from the fixed or stationary bear-V:

ing section. .The design of each bushing section 42 is such that the sections must be fitted or slipped on to the bearing sections, as best shown in Fig. 12. When properly positioned the bearing sections can be handied without danger of any of the bushing sections becoming accidentally displaced.

In Figs. 3 and 4 there is illustrated a slight modification of the flanged connections of the members 1 and 1 The members have spaced lugs 50, with the lugs at one edge of a member stag ered relative to lugs at the other edgs of te member, consequently the members can be matched and the lugs bent to interlock and form what I term interlocked edges which also includes the referred manner of interlocking the mem rs of the rod. 1

What I claim is 1. A power transmitting member comthe ends of said members, bushings in said liners, and a lubricant pipe extending from one liner to the other disposed between said members with its axis coincident with the longitudinal axis of the member.

2. A power transmitting member comprising sheet metal members having longitudinal interlocked ed es, each member having a longitudinal sti ening rib, a bridge connecting said members intermediate the ends thereof, liners supported at the ends of said members, and bushings in said liners.

.3. A power transmitting member comprising sheet metal members having interlocked longitudinal ed es, each member having a longitudinal sti ening rib, a bridge connecting said members intermediate the ends thereof, liners supported at the ends of said members, bushings in said liners, and a lubricant conduit extending from one liner to the other and through said bridge between said members. a

4. A power transmittingmember embodiying'she'et metal members having longitu nal interlocked edges and each member havthe end of said member comprising interlocked bearing members having ferrules and barrels adapted to aline with the first mentioned ferrules and barrels, aligned sleeves in said barrels, and bolts in said sleeves, the

ends of said barrels being fiat to provide abutments for the bolt heads and nuts.

5. A connecting rod comprising two sheet metal members interlocked at their longitudinal edges forming a tube with bearings at the opposite ends thereof, a lubricant pipe disposed centrally within said tube-extending from one bearing to the other, and means supportin said pipe in the tube intermediate its en s.

6. A connecting rod comprising two sheet metal members interlocked at their longitudinal edges forming a tube with bearings at the opposite ends thereof, the cross sectional dimension of said tube parallel to the axes of said bearings increasing from the ends of the tube toward the central portion thereof and the cross sectional dimension at right angles to said first dimension increaslng from one end of the tube toward the other.

7. A connecting rod comprising two sheet metal members interlocked at their longitudinal edges forming a tube with bearings at the opposite ends thereof, said tube being diamond shaped in cross sectien, the short diagonal of said section being substantially parallel to the axes of said bearings and increasing from the ends ofthe tube toward the central portion.

8. A connecting rod comprising two sheet metal members interlocked at their longitudinal edges forming a tube with bearings at the opposite ends thereof, said tube being diamond shaped in cross section and a bridge member within the tube intermediate its ends to reinforce said members.

9. connecting rod comprising two sheet metal members interlocked at then. longltudinal edges forming a tube with bearings at the opposite ends thereof, said tube being pol gonal in cross section, one dimension of sai section increasing from one end toward the other and another dimension being great- In testimon whereof I afiix my signature in presence 0 two witnesses.

, JOHN H. PETROSKY.

Witnesses-r ARTHUR Tuonmu'r,

KARL H. Bum 

